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Patented Dec. 8, 1936 UNITED STATES CARD PUNCH Charles 0. Wellman,Binghamton, N. Y., assignor to International Business MachinesCorporation, New York, N. Y., a corporation of New York ApplicationNovember 29, 1935, Serial No. 51,990

19 Claims. (Cl. 164-115) '.l'his case relates to card punching machines,particularly `to the perforating unit of the automatic, mechanicalaccounting system, in which record or tabulating cards are perforated indifferent columns to represent information to be,

tabulated.

'Ihe record card has parallel columns of index point orperforation-receiving positions, in which holes are punched to designatedata according to a selected code. For instance, in the Hollerith,single hole code, each character is represented by a single perforationin one index point of a card column. Thus, numbers l, 2, 3-10, 1l, 12are represented by perforating the corresponding index point positions1, 2, 3-10, 11, 12 of a card column. These index point positions areprogressively distant from a datum line in the order of their magnitude,thereby forming a. differential system.

In the type of perforating machine with which this invention isconcerned, the card is fed column by column to a single column ofpunches, which perforate the card columns one after another. Theselection of the punches may be made by manual operation of keys orunder automatic control of a master or pattern card. The punch selectionby the pattern card is for the purpose of duplicating informationcontained on the pattern card in a plurality of other cards, which, forconvenience, may be termed the work cards.

In addition to the information duplicated in the work card, the lattermay be punched with additional data, which may be termed individual(card) data. According to the former system of preparing a work card, itis first routed through the machine for an automatic duplicating run,then removed, and subsequently rerouted through a perforating machinefor an individual data, run.

During the latter run, the card columns not filled in with duplicatedata are perforated through manual operation of the keys.

During the duplicating run, the card columns of the work card which areassigned to individual data are usually fed past the punches withoutaccompanying punching operations. 'I'his is called the skippingoperation and is effected by skipping mechanism.

'I'he skipping mechanism is set in operation under control of a specialperforation, usually the X perforation, contained in the pattern card.Ordinarily, the X perforation in the pattern card not only initiatesskipping operation but also causes an X hole to be punched in the workcard as a preliminary to the skipping operation. In some cases, the Xhole lin the work card is desirable, as in controlling class selectionin tabulating machines, in the manner disclosed in Patent No. 1,976,617.In other cases, it is not desirable to punch the X hole in a cardcolumn, as when the latter is to be used for straight tabulation,without class selection.

Further, if the card with an X hole'in a co1- umn is used as a patterncard in ordinary duplicating punching machines, then the presence of theX hole will initiate a skipping operation, whereas it may be desired toavoid the skipping in order to duplicate all the dataY on the patterncard.

Accordingly, an object of the present invention is to provide forselectively perforating or not perforating the first of a series ofindividual data columns in a work card with a special skip controlperforation under control of the pattern card.

A correlative of the latter object is to set the skipping means inoperation under an automatic control Without reproducing the specialperforation in the Work card.

Another object is to duplicate a special per- A foration in the workcard, under master card control, without setting the skipping mechanismin operation.

A correlative object is to prevent the special perforation on thepattern card from either initiating skipping operation or beingduplicated in the work card.

By attainment of the latter two objects, the card feed may be arrestedand the operator may ll in the individual data in the work card throughmanual operation of the keys. When the individual data has been filledin, the master card may resume its control of the punching and feedingof the work card.

'I'he invention also contemplates the reproducing of the specialperforation in a column of the work card together with reproduction of asecond, value, perforation in the same column, and to accomplish thisresult with or without accompanying skipping operation, as may bedesired.

Further, the invention contemplates arrest of the card feed underpattern card control and the manually controlled punching of a hole inthe work card automatically followed by afskipping operation.

All of above objects, and such others as may appear in the further partsof the specification or be apparent from the drawings, may be consideredas embraced in the general object of increasing the flexibility ofoperation of card perforating machines.

In the drawings:

Fig. 1 is a plan view of the machine.

Fig. 2 is a vertical sectional view through the left half of themachine.

Fig. 3 is an enlarged plan View, partly sectional of the intermediatepart of the machine, with the upper portions of the machine removed.

Fig. 4. is a section along lines 4-4 of Fig. 1.

Fig. 5 is a detail view of the floating cam control and the c'ontactscontrolled thereby.

Fig. 6 is a plan view of the rear ends of some of the punch interposers,and their interlocks.

Fig. 'I is a section along lines 1-1 o f Fig. 1. Fig. 8 is a sectionalong lines 8-8 of Fig. 2.

Fig. 9 is a section along lines 9-9 of Fig. 2. and

Fig. 10 is a' circuit diagram.

For purposes of illustration, the invention has been applied to aperforating machine o f the type disclosed in Patent No.1,976,618. Onlysuch parts of the machine will |be explained herein as are necessary toan understanding of the present invention.

Referring to Figs. 1 and 4, the pattern card P is moved in the directionof its length along the flat surface of a frame I6 by a pair of grippingand pushing fingers Il and I2. Finger I2 engages the right hand, laggingedge, of the card to push the card to the left (Figs. 1 and 4) throughits active or control stroke while nger II engages the left, leadingedge of the card to push the card to the right through its inactive,return stroke. v

During its movement along surface III, the pattern card is held down bya pair of cover plates I3 and I4. Plate I3 is fixed in position, whileplate I4 is hinged to the frame, at its right end, on pin I5. The leftor forward end of plate I4 is latched beneath the nose of a latch I6urged to the right (Fig. 4) by a-spring I1.

Near itsrear end, plate I4 journals common contact roll 22 coacting witha column of twelve brushes 23 to analyze the perforations of the patterncard. Brushes 23 are spaced correspondingly to the spacing of the twelveindex point or perforation positions of a card. To one side of brushes23, there is an additional, common brush 23'. Card P is fed one step ata time to the left to successively locate the card columns at theanalyzing station. When a card column is at analyzing station, a brush23 reaches through a perforation in the column to engage contact roller22, and thereby close the following circuit (see F18. 10):

Duplicating circuit A.-From the side of the line, through normallyclosed contacts 24, line 25, normally closed contacts 26, floating camcontacts 21 (now closed), common brush 23' of the analyzing station,common contact roller 22, the brush 23 engaging roller 22 through theperforation in card P, the connected duplicating magnet 28, and to theside of the line.

To disable the pattern card from controlling punching operation, coverplate I4 is raised to separate contact roller 22 from brushes 23, sothat duplicating circuits cannot be formed.

'Referring to Figs. 1 and 2, work card T rests on a ilat surface offrame III; its rear, lagging, edge is engaged by a pivoted pusher 29;and its front, leading, edge, is engaged by an abutment 30. Blank cardsT are fed one at a time from a magazine 3l into position betweenelements 29 and 36. Pusher element 29 moves card T to the left to placethe card columns in .succession at the punching station. The punchingstation has a column of twelve punches 32 spaced correspondingly to thespacing of the index point positions of a card column, and dies 33 forthe punches. When the last column of card T has been punched, the cardis removed from the machine.

The rear pusher l2 of pattern card P and rear pusher 29 of work card Tare carried, respectively, .by transversely extending brackets 34 and 35ilxed to opposite sides of an escapement rack 38 (ses Figs. 1, 2, and3). 'Ihe iront abutments I I and 30 of cards P and T, respectively, arecommonly carried by a bracket 31 secured to the left' end of rack 36(see Figs. 1,2, 4, and 8). Thus, both cards P and T are compelled tomove-in lmison with rack 36, and brushes 23 and punches 32 are sopositioned that like-numbered or corresponding columns of the two cardswill be located simultaneously at their respective analyzing andpunching stations.

Rigidly secured to but insulated from bracket 34 is aspring metal plate38, formed with three joined contact fingers or brushes 38, .33', and38a (see Fig. 1). 'Ihese lingers being connected to rack 36 throughbracket 34, move in unison with cards P and T. Fingers 39 and 39' ridealong two rows of contact spots 46 of a stationary column commutator C.

The successive contact spots 40, considering both rows, are spaced apartthe width of a' card column, and each corresponds to a d'iii'erentnumbered card column. The upper row of contacts 40 corresponds to theeven numbered card columns and the lower row of .contacts 45 to the oddnumbered columns. Brush 39 engages the even numbered contacts 40 andbrush 38' engages the odd numbered contacts 40. Either brush will beengaging a contact 46 at each column step of advance of rack 33. Brush33a rides on common contact strip 4I of the commutator. Plug sockets 42,one wired to each contact stud 40 (see Fig. 10, the circuit diagram) areprovided in the commutator, so that any column of the commutator may bepluggedto a space magnet 45 or a skip magnet 46 (Figs. 3, 7, and 10)wound on opposite poles of a common core 41. The functions of thesemagnets will be explained later.

Punches 32 maybe manually selected for `operation by manual depressionof value selecting keys 58. In addition to keys 50, the usual space key50' is provided (see Fig. l) which, when depressed, effects a step ofadvance of rack 33 and the cards, without an accompanying punchingoperation, in a marmer known to the art.

Keys 50 may also be automatically depressed under control of magnets 28energized by previously described duplicating circuits A. 'I'he armaturelever 52 'of each magnet 28 is swiveled to the stem of a separate key50. When a magnet 28 is energized, it swings its armature levercounterclockwise (Fig. 2) to depress the connected key 50.

Swiveled to the stem of each key 59 is one arm of a bell crank 53, theother arm of which is pivoted toan' interposer bar 54. Also connected toeach bell crank Is a spring 5l. When a key 50 is depressed, manually orautomatically, it rocks the connected bell crank 53 against nesistanceof spring 55 to advance the associated interposer bar 54. Eachinterposer 54 rests at its front end on a diierent punch 32, and isAnotched intermediately to provide a verticah` shoulder 56 engaged withacommon bail 51 fixed end of link 50 is formed with a hook 62 vunder- 7554, except the X the type disclosed in witch 64. In a manner brought outin detail in Patent No. 1,878,930, when any interposer 54 is advanced,its shoulder 56 rocks bail link 68, the hook 62 of which thereupon movesblade-63 upwardly to close switch 64.

-Closure of switch 64 completes the following circuit (see Fig. 10):

Punch Circuit 8.-Frm the --lside of the line, through contacts 24,switch 64, punch magnet 65, and to the side of the line.

Energlzation of magnet 65 operates linkage 66 to depress a hammer plate61 (Fig. 2). The left, forward end of each interposer 54 has a notch 64'to freely receive the hammer tip 61' when the interposer is in its rearposition.

When an interposer is advanced, ythe upper edge of the interposer islocated beneath hammer tip 61 so that depression of the latter strikesthe advanced interposer and depresses it. As a result, the punch 32beneath the interposer is pushed down by the interposer through card Tand into its die 33 to perforate the card in an index point positioncorresponding to the key 58 which has been operated.

Switch 64 is opened by operation of linkage 66 to deenergize magnet 65,and hammer 51 and the depressed punch 32 are restored in a manner fullyexplained in aforementioned Patent No. 1,878,930. When key 58 rises, theadvanced interposer 54 returns to the right and its shoulder 56 releasesbail 61 which is thereupon restored by a spring 69 (Fig. 2).

Following the punching of a hole in a column of card T, the card is fedone step to place the next column in punching position. Feeding of cardT is effected by movement of rack 36, with which pattern card P andfeelers 39, 39 and 39a of column commutator C are also movable. Forconvenience, the rack 36 and the card pushers 1l,l2, 29, and 38connected thereto, may be termed a card carriage. The feeding movementis controlled by escapement This escapement mechanism is of Patent No.1,426,223, and will be briefly described in order to aid inunderstanding the present invention.

Below all the mounted on a shaft 13 (see Figs. 2 and 3). The top of thebail is engaged by all the interposers or "11 position interposer Thus,depression of any in- X interposer, will rock bail V12 about its shaft13. Referring to Figs. 3 and-5, is provided with a screw 14 bearing ontop oi one arm of a lever 15 rotatably mounted on 15 has a pin 16extending loosely through a hole 1.1 in escapement pawl 18. The pawl isloosely mounted by means of an elongated slot 18" on shaft 13, in amanner to permit movement of the pawl longitudinally of rack 36. Aspring 19 acting on lever. 15 holds the latter and ball 12 incounterclockwise position (Fig. Pawl 19 is maintained in engagement withrack 36 by a spring 88 connected to the pawl.

Lever 15 has a screw 8l bearing on part of a member 82 rotatably carriedby shaft 13 and urged clockwise (Fig. 5) by a spring 83. Member 82 has apin and slot connection 84 with 'a holding dog 85. When in normal,upper, position, bail 12 and lever 15 permit pawl 18 to engage rack 36and prevent member 82 from moving dog 85 into engagement with the rack.

When punching anyv value, except the X value,

mechanism.

54--z (see Fig. '1). terposer, exceptv the interposers 54 is a bail 12`the advanced interposer 64 is depressed and rocks bail 12 clockwise(Fig. 5). Lever 15 is thereby rocked in the same direction and member 82follows. As a result, pin 16 raises pawl 16 out of engagement with rack36 and member 82 lowers dog 85 into engagement with the rack before therack can advance to the right (Fig. 5). When pawl 18 is raised, itsspring 88 moves it to the left to position its nose above the next racktooth.

After the. punching operation, the interposer rises, and bail 12 andlever 15 are returned, counterclockwlse (Fig. 5) by spring 18. Pawl 18is thereupon rocked counterclockwise by spring 88 into the rack toothabove which it had been positioned, while dog 85 is raised by member 82to release the rack for movement to the right by the usual spring motor(not shown). As the rack moves to the, right, it actuates the engagedpawl 18 in the same direction until the pawl is arrested by engagementof the left side of its slot 1,8' .with shaft 13. This limits movementof rack 36 to one step for each reciprocation of bail 12. The step ofmovement of the rack advances cards P and T and brushes 39, 38', and 38aa distance equal to the width of a card column.

To prevent sparking between brushes 23 and contact roller 22 when thepattern card advances, and to time the making of duplicating circuit A,means such as disclosed in Patent No. 1,976,618 are provided for timingthe make and break of contacts 21, which are in circuit A. A descriptionof this means follows:

Referring to Figs. 5 and 9; shaft 58, to which bail 51 is xed, rigidlycarries at one end a T- shaped member 81. A floating cam member 88 isrotatably mounted on shaft 58 adjacent member 81. Between the twomembers is a spring 89 tending to force cam 89 clockwise (Fig. 5).Normally, the side of a finger 88 of 4cam 88 abuts the side of 'atransversely extending lug 98 of a pivoted element 9| freely pivoted onshaft 13.

Element 9| has a stud 92 at its free end beneath an insulating block 83secured to a leaf spring blade 94 which carries one of the points ofswitch 21 (Fig. 5). Thepressure of spring blade 94 is sufficient to holdelement 9| depressed with a transversely bent part 96 thereof engagedwith the top of escapement pawl 18. In depressed position of element 9I, its lug 98 is in front of finger 88 of cam 88 to prevent clockwiserocking of the latter by spring 89.

When a. duplicating circuit A is formed, it energizes a magnet 28 tocause advance of an interposer 54, which thereupon rocks bail 51counterclockwise, as viewed in Fig. 2, and clockwise, viewed in Fig. 5.Since bail 51 is fast to shaft 58, the latter and the member 81 carriedthereby are also rocked clockwise (Fig. 5). As a result, the tension ofspring 89 is increased to tend to turn cam 88 more forcibly clockwise,but the cam cannot rock clockwise while its finger 88 still engages tab98 of element 9i. The parts are then in the positions shown in Fig. 5.

Due to the rocking of bail 51, contacts 64 are closed to establish punchcircuit B, magnet 65 is energized, and hammer 61 is depressed to effectthe punching operation. During the punching operation, bail 12 is rockedclockwise (Fig. 5), resulting in the raising of pawl 18 above and clearof rack 36. When the pawl rises, through its engagement with part 96 ofelement 9|, it elevates the latter so that stud 92 raises spring at atime to receive the conical tip of .depression of blade 84 to openswitch 21. This the selected punch 32.

When element 9i is lifted by pawl 18,'lug"90 of the element moves abovefinger 88 of cam occurs during 21 open after it had been opened by therise of escapement pawl 18.

abutting finger 91 of member 88.

Element 9i remains in its raised position and switch 21, therefore,remains open until pawl 18 moves down to reengage circuit B is broken bythe opening of switch 64, hammer carriage has :finished its feedingstep, then nger 88 rides 01T lug 90 permitting member 9| to drop andclose switch 21.

Thus, switch 21 is held open until both the last- 'I'he presentinvention provides for the X perforation in the be described under thefollowing heading:

X punching without skipping Fixed to top plate |00 of the machine'is anoblong block lill (see Figs. 1, 2 and 7). Block I 0| carries a pivot |02for a cruciform lever |03 zontally spaced apertures |06 and |06', eitherone |01 (Fig. 2) slidably mounted in block urged towards lever l 08 by aspring |08 within the block.

The lower vertical arm of lever ID3 is provided at its free end with apin i 09 which passes through a slot H0 in an ear IH of bail 51 (seeFig. 9). As explained previously, bail 51 is xed to its shaft A theindividual for perforating the X position of the first column of theindividual data field of card T.

It has been stated before that all the interposers 54 indicated in Fig.7, H4 below nterposer 5l depression The condition now is that the firstcolumn oi advance one step,

field and of the respective operating stations.

The machine is also capable of punching an additional value in theX-punched card column. Wh P was analyzed, the

y mained closed, and consequently the X-duplicat- 2,063,475 y v v ingcircuit A remained in force to hold the X interposer in advancedposition. Ordinarily, only one interposer at a time can be advanced /dueto the usual pivoted interlocks ||5 at the rear ends of the interposers(see Fig. 6).

To permit an additional hole to be punched in the X-punched column, theX interlock element IIE is removed, so that any other interposer may beadvanced although the X interposer is still in advanced position.

Thus, when the card feed has been stopped as an incident to an Xpunching operation, the operator may depress a key 50 for selecting avalue other than X to be punched in the X- punched column. The punchingof the additional, selected, value is followed by the usual escapementoperation to feed the card carriage one column step. 1

If the skip field of card P is blank except for the X perforation in thefirst of its columns, then there will be no duplicating circuits formedwhile the columns of the skip field following the first column arepassing through the analyzing stay tion. Accordingly, the operator,without interference from the duplicating section, may punch the second,third, et seq., columns of the individ- 1 ual data field under manualcontrol by depressing the desired character keys 50. Each time, a key 50is operated, the selected value will be punched in an individual datacolumn, and the cards fed one step. Thus, the individual data field willbe perforated column by column with data selected by manual operation ofkeys 50. When the last of the individual data columns has been punched,the accompanying feed step will locate the first column of card Pfollowing the skip field at the analyzing station. The perforation inthis duplicating column will be analyzed, forming a duplicating circuitto cause punching in the first column of card T following the individualdata field. Thus, the duplicating operations under pattern, card controlmay be resumed automatically after the individual data field has beenpunched under manual control.

If the skip iield of card P instead of being blank in the columnsfollowing the rst one, has perforations in these columns, and it is notdesired to duplicate these perforations in card T, then while the cardcarriage is at rest following punching of the X hole in card T, theoperator raises cover plate I4.

This removes common contact roller 22 of the analyzing means fromcooperating relation with brushes 23, so that the analyzing mechanism isdisabled to prevent formation of duplicating circuits. The individualdata may then be perforated without interference from the pattern cardmechanism. After punching the last individual data column, the operatormay replace cover plate I4 in operative position, and automaticduplicating and feeding operations under control of card P will beresumed.

If the skip field of card P has perforations in thecolumns following thefirst one, and it is desired to duplicate these perforations in theindividual data field of card T, then when the card' feed is interruptedfollowing the punching of the X hole in card T, the operator depressesspace key 50. This brings the second column of the skip field toanalyzing station, and automatic duplication underA control of card P iscontinued.

If in the case just described, it is desired to perforate the firstindividual data column with another value in addition to the X hole,then instead of depressing the space key, the necessary value key isoperated, after which automatic duplication of the perforations in therest of the skip field follows.

If the first column of the skip field of card P has, in addition to theX perforation, still another perforation, then the X hole and the otherhole will both be duplicated in the work card. The duplication of the Xhole will not cause skipping or feeding vof the card, but thesimultaneous duplication of the other perforation will cause the cardcarriage to advance one column step.

., Suppression of X duplication Referring to Fig. 9, when it is desiredto suppress X duplication, the operator depresses key I 05. This rockslever |03 clockwise, placing aperture 06' in front of plunger |01 whichthereupon locks the lever in its clockwise position. When lever |03 isrocked clockwise, its pin |09 coacts with slot IIO of bail 51 to movethe bail to the y left, thereby alining notch ||3 with interposer 54--and edge 56 of this interposer. Now, when an X duplicating circuit isformed, the X interposer advances and passes freely through notch ||3 ofbail 51. 'Consequently, bail 51 is not disturbed, link 60 is not lifted,switch 64 is not closed, punch circuit B is not established, and punchmagnet 65 is not energized. Thus, the X hole is not punched although theX interposer has been advanced. Further, the card feeding mechanism hasnot operated, and the cards, therefore, remainin the same columnpositions.

With this condition, manual depression of space key 50 or of a value key50 would cause formation of a punch circuit B, which would causedepression of hammer 61. Since the X-duplicating circuit A is still inforce and consequently the X- interposer 54 still in advanced position,depression of hammer B1 would depress not only the advanced space keyinterposer or the advanced Value key interposer, but would alsonecessarily depress the advanced X interposer, thus causing an Xpunching in card T, which would defeat the object of suppressing Xduplication. Accordingly, before depressing the space key or a value key50 (other than the X key), the X-duplicating circuit A must be broken tocause retraction of the X interposer. Circuits A have, in common, switch26, and it is by opening this switch that the duplicating circuits maybe opened at will.

The means for opening switch 26 now be explained.

Referring to Figs. 1 and 2, at the left end of the machine, there is athumb piece |20 (see also Fig. 8), which is part of a horizontal lever|2|, pivotally mounted, by a stud |22, on bracket 31 which is fixed torack 36 and carries pushers II and 30 of cards P and T, respectively.The end of lever |2| opposite the thumb piece |20 is formed with arearwardly and then downwardly bent tail |23 whichengages the cross bar|24 of a bail carried by a shaft journaled in the frame. The rod |24extends lengthwise of the machine (see Fig. 3) so as to be engaged bytail at Will Will |23 in any column position of the card carriage.l

(as viewed in Fis. 1) until the front of the lever abuts pin |21. Aslever I2| rocks counterclockwise, its depending tail |23 presses on rod|24 to rock shaft |25 clockwise (Fig. 8). Extending downwardly fromshaft |25 is a rigid arm |60, the lower end of which is in front of aspring blade A |3| carrying one of the points of switch 26, the

companion point of which is on a blade |36. Switch 26 is normallyclosed. When shaft |25 is rocked clockwise, its arm 00 engages springblade |3| and displaces it to theleit (Fig. 8), thereby separating thepoints of switch 26 to open the X-duplicating circuit A. As a result,the X magnet is deenergized, and the X interposer 54 is retracted.

Now, while pressing on thumb piece |20 to maintain it in itscounterclockwise position (Fig. 1), so that switch 26, and thereby, theX-duplieating circuit, remains open, the operator, at the same time,depresses either space key 50' or a value key 50. If the space key isdepressed, the

card carriage merely is advanced one column step,I

whereas if the value key is depressed, the punching of the manuallyselected value precedes the column advance of the card carriage. 'Iheoperator may then continue to perforate the successive columns of theindividual data eld with the manually selected values.

In' above manner, the presence of an X hole in the pattern card P, whenbail 51 has its notch ||3 in line with interposer 54-:c causes arrest ofthe card feed, while at the same time, the X duplication is suppressed.Thus, the individual ileld of card T may be perforated in all itscolumns with the manually selected individual data, unaccompanied by anX duplication in the ilrst individual data column.

Skipping without X punching It has formerly been necessary to punch an Xhole in order to initiate skipping operation. If the punching operationwas proceeding under pattern card control, then it was necessary to havean X hole in the iirst column of the skip ileld of the pattern card toinitiate skipping operation. The present invention provides for means toskip any desired field of a card without requiring X punching or controlby an X duplicating circuit.

The instant skipping mechanism also makes use of the ordinary skip bar|40 (Figs. 1, 2, 3, 5, and 7) removably attached to rack I6, and havingdepressions |4| in its upper edge to provide high and low portions. Thespacing of these portions and the length of each portion is dependent onthe particular requirements of the punching job. If it is desired, forexample, to permit skipping of the twenty-iifth to thirty-sixth cardcolumns. then the skip bar is provided with a high portion ofcorresponding length and arranged along a corresponding part of thetravel of rack 36. This skip bar construction and its purpose aredisclosed vin detail in Patent No. 1,426,223.

As in the previous machines, skip bar |40 coacts with a skip lifter |42.This skip lifter extends transversely of the skip bar, is constrained tomove transversely of the skip bar, and is normally in retracted positionwith its reduced right end |42 (as viewed in Fig. 7) located directlyabove the skip bar and underneath escapement pawl 16 (see also Fig. 5).The skip lifter is mounted at its rear end on a pin |43 (see Fig. 3)which also provides a. pivotal connection between a pair of toggleelements |44 and |45. Element |44 is pivoted to the frame on a stud |46,and element |46 is connectedto a leaf spring |41. .These two elementsconstitute-a toggle, held to either side 'of dead center or neutralposition by a spring |41.

Pivoted element |44 is formed with oppositely and laterally extendingears |40 and |46. Ear |46 is in front of and normally at a distance froma vertical, depending projection |50 of bail 12.

'I'hus far, the old parts of the present skip mechanism have beendescribed. 'I'henew parts of the skip mechanism. peculiar to the presentinvention will now be described.

Engaged with the front of ear |46 of element l |44 is a pin |52extending upwardly from the forward end of arm |53a of a bell cranklever |53 journalled on the lower end of a vertically extending, iixed,pivot |54. The other arm |56b of bell crank lever l|53 extends in frontof previously mentioned skip magnet 46. Journaled on the upper end ofpivot |54 is an arm |56 parallel to arm |5311. The two arms |5317 and|56 are rigidly joined to each other by a vertically disposed armatureplate |51.

Magnet 46, when energized, attracts armature plate |51 to rock bellcrank lever |53 clockwise (Fig. 3). As lever |53 rocks clockwise, itspin |52 presses against ear |48 of element |44 to rock the lattercounterclockwise. This movement of element |44 actuates skip lifter |42forwardly, (to Ythe right, as viewed in Fig. 7), and the skip lifter isthereafter held in this position due to the shifting of the toggle,comprising elements |44 and |45, to the opposite side of neutral fromthat shown in Fig. 3.

When skip lifter |42 is moved forwardly, the

inclined shoulder |42a (Fig. '1), between the narrowed end |42' and thebody of the lifter, rides up onto the top of skip bar |40 until the partof the lifter behind the shoulder |42'a is resting on top of the skipbar. 'I'he skip lifter is thus elevated by the skip bar. If the skiplifter rode up on a high portion of the skip bar, then the narrowed end|42' of the skip lifter was raised sulllciently high to engageescapement pawl 16 and lift the pawl clear of rack 36.

If the skip lifter rode up on a low portion |4| of the skip bar, it wasnot raised high enough to release pawl 16 from rack 36.

When the skip lifter rides up on a high portion of the skip bar, pawl 10is released from rack 36 and the card carriage is released forcontinuous feeding operation, during which the selected card columns ofvcards P and T skip past their respective operating stations.

The skipping operation is initiated by energization of skip magnet 46.When it is desired to skip the individual data ileld of card T and thecorresponding skip field of card P, magnet 46 should be energized whenthe first columns of these ilelds arrive at their operating stations.For this purpose, the operator runs a plug wire |60 from plug socket 6|in circuit with magnet 46 (see Fig. 10), to that plug socket 42 ofcommutator C (see also Fig. 1) which corresponds to the iirst column ofthe fields to be skipped. Thus, if the twenty-fifth card column is theilrst column to be skipped, then wire |60 is plugged to the socket 42connected to the twenty-fifth contact spot 40 from the right, as viewedin Fig. l. Plug wire |60 connects the selected socket 42 to plug socket|6| which is at the end of line |62 running through skip magnet 46.

It will be recalled that brushes 36, I9 and Ila are attached, throughbracket 34, to rack 36 to move in unison with the cards, that brush Ilwipes the upper row of contacts 40 which correspond to even numberedcolumns, and that brush 39' wipes the second row of contacts 40 whichcorrespond to odd numbered columns. When any card column is at itsoperating station, then the brushes 39, 39', and 99a are incorresponding column position along commutator C.

Thus, ii.' the twenty-fifth card column is `at operating station, thenbrush 39 is engaging the twenty-mth contact 40 of the commutator. Now ifthe latter contact 40 is Wired to skip magnet 46, the following circuitwill form (see Fig. 10):

Skip circuit C.From the side of the line, through normally closedcontacts 24, line 25, contacts 26, floating cam contacts 21, line '|62,skip magnet 46, plug socket |6I. plug wire |60, plug socket 42, thetwenty-fifth column contact stud 40, brush 39', brush 39a, common strip4|, and to the side of the line.

Energi'zation oi.' magnet 46 initiates operation of the skippingmechanism, as explained above, resulting in continuous feeding ofselected columns of cards P and T past their respective analyzing andpunching stations.

Ihe number of columns skipped is determined by the length of the .highportion of skip bar |40 onto which the skip lifter |42 has been elevatedby the action of magnet 46. When the skip lifter was elevated, it raisedpawl 18 to release rack 36. As long as the skip lifter remains on a highpart of the skip bar, it continues to hold pawl 18 in rack releaseposition. When a depression |4| of the skip bar reaches the skip lifter,the latter drops, permitting pawl 18 to move down and reengage rack 36,thus stopping the skip feed.

When pawl 18 Was raised by skip lifter |42 to edect the skippingvoperation, the pawl rocked member 9| clockwise (see Fig. 5). As aresult, pin 92 of member 9| lifted spring blade 94 to open floating camcontacts 21 which are common to duplicating circuits A. Accordingly,during the skip feed, switch 21 is continuously open to prevent makingof the duplicating circuits under control of any perforations which maybe present in the skip field of the pattern card.

The first skip column of card P usually has an X perforation. When thiscolumn reaches analyzing station, a duplicating circuit is formedthrough the X magnet 28. If, as has been premised here, the contact stud40 corresponding to the first columns of the skip and individual dataelds has been plugged to magnet 46, then, at the same time as a brush 23engages common contact roller 22 to form the X duplicating circuit,brush 39 or 39' has engaged a contact 40 to form circuit C forenergizing the skip magnet 46. Thus, the circuit through the skip magnetis completed at the same time as the circuit through the X magnet 28.The skipping mechanism, accordingly, is placed in operation byenergization of magnet 46 while the X interposer is being advanced by Xmagnet 28. Before advance of the X interposed can proceed far enough tocause a punching operation (by rocking bail 51 to close switch 64), theskip lifter has been moved onto the high portion of skip bar 40. Theskip lifter has thereby been elevated to lift escapement pawl 16 whichin turn, through member 9|, opened switch 21 to break the X duplieatingcircuit A. Consequently, X magnet 28 is deenergized and the X interposerstops advancing and is retracted. Thus, when the duplicating andskipping circuits are simultaneously formed, switch 21 is opened beforethe interposer advanced by the duplicating circuit can cause punchcircuit B to make. This result is made even, more certain by reason ofskip magnet ,46 being designed to act more quickly than magnet 28.

Circuit C of magnet 461s also through switch 21 which, as describedabove, is opened by operation of the skipping mechanism. Hence, circuitC is broken at the same time as the circuit A through thevduplicatingmagnet 28. But due to the toggle action of elements |44, |45, and |41,the skip lifter remains in advanced position after circuit C has openedto deenergize magnet 46.

`As explained before, `the skip feed continues until a low portion 4| ofthe skip bar arrives beneath the skip lifter. As a result,` the latterdrops, pawl 18 reengages rack 36, and switch 21 closes. At this time,the first columns of cards P and T following the skipped fields lare atoperating positions. The duplicating operations are then resumed in themanner already described. The first of the latter duplicating operationscauses energization of a magnet 28 to advance the connected interposer54. When the latter advances, it rocks bail 12 counterclockwise (Fig, 2)causing the depending linger |50 thereon (see Figs. 3 and '1) to pressagainst ear |49 of toggle element |44 for returning the toggle to itsinitial position, shown in Fig. 3. This results in the retraction of theskip lifter. Thus, the iirst numerical punching following the skip feedcompletes restoration of the skipping mechanism.

When punching a card solely through manual depression of keys 50, theduplicating parts being rendered inoperative by lifting of cover plateI4 or being omitted altogether, the same skipping mechanism may be usedto effect skipping Without punching an X hole in the first skip column.

Further, if desired, this may be done independently of control by thecolumn commutator or skip magnet 46. For this purpose, a finger button|65 (see Figs. 1, 3, and '1) is fastened to armature plate |51 of magnet46. By pressing on button |65, the operator rocks lever |53 clockwise(Fig. 3) to initiate skipping operation in the same manner as thoughmagnet 46 where energized.

Automatic spacing with X punching In prior art machines, the Xperforation in the pattern card initiates skipping operation. If card Tbeing punched in the instant machine is to be subsequently used as apattern card in a machine of prior type, then it must now be punchedwith an X hole in the first of the columns to be skipped. The X hole ina column is also employed in tabulating machines to control classselection, as disclosed in Patent No. 1,976,- 61'1. For these reasons,it may be desired to skip columns of card T accompanied by the usual Xpunching in the ilrst of the columns to be skipped. The presentinvention accordingly provides means to eiect skipping with anaccompanyingX punching.

To punch an X hole in the Work card, and automatically feed the card onecolumn step, bail 51 is first adjusted to its right hand position, shownin Fig. 9, in which notch ||3 is out of line with the X interposer. Whenthe column of card P containing the X hole comes to analyzing position,the X interposer is advanced and rocks bail 51, causing link 60 to rise,close switch 64, and form punch circuit B to energize punch magnet 65.The punch magnet then operates linkage 66 to cause hammer plate 61 toeffect an X punching.

.As explained previously, the X interposer, when depressed by thepunching operation, does not rock escapement control bail 12, andtherefore.

the card feed is ordinarily interrupted following one end of line |66 isa switch |66 which. when in full line position (Fig. l) places magnet 45in series with a pair of normally open contacts |10. The latter contactsare closed when punch-operating linkage 66 is actuated to depress hammerplate 61 (see also Fig. 2). Under the prescribed conditions, commutatorcontact 40 corresponding to the first column of the skip field of card Pand to the first column of the individual data field of card T has beenplugged to space magnet 45. Now, at the same time as the latter cardcolumns reach their respective operating stations, the contact 40corresponding to thesecolumns is engaged by a brush 36 or 66. The firstresult is that a duplicating circuit A is formed under control of the Xhole in the first column of the skip field of card P. This circuit Aenergizes X magnet 26 to advance the X interposer. Since bail 5.1 hasbeen placed, as premised, with its notch ||3 out of line with the Xinterposer, the advance of the latter rocks the bail to cause link 60 toclose switch 64, thereby forming punch circuit B. The latter circuitenergizes magnet 65 to operate linkage 66 for depressing hammer 61 tocause the X punch 32 to perforate the X position of the first individualdata column of card T. y

When linkage 66 depresses hammer 61 to effect X punching, the linkagealso closes contacts |10. As a result, the following circuit is formed(see Fig. 10):

Space circuit D.-From the side of the line, through contacts 10, switch|66, line |66, space magnet 45, a plug socket |61, a plug wire |66, aplug socket 42, the connected contact 40 which corresponds to theX-punched card column, brush 36 or 36 one of which is now engaging thelatter contact 40, brush 36a, strip 4|, and to the side of the line.

The above circuit energizes magnet 45 to attract its armature |12.

Armature |12 of space magnet 45 (see Figs. 3 and '7) is rigid with abell crank lever |13 journaled on a fixed, vertical pivot |14. Arm'i13aof lever |13 extends in front of bail 12, and'its free end passesthrough a notch |15 in a member 16 rotatably carried by shaft 13 of thebail (see Figs. 2, 3, and '1). Member |16 lies within a plane passingbetween a pair of interposers 54, and is narrow enough not to bedisturbed by depression of these interposers. The upper part of member|16 abuts the cross bar of bail 12.

When magnet 45 is energized, it rocks lever |13 counterclockwise (Fig.3) and arm |13a moves to the left (Fig. 2) thereby actuating member 16counterclockwise. Member |16, in turn, rocks bail 12 in the samedirection. The latter thereupon causes pawl 16 to release rack 36 anddog 65 to engage the rack. This is the same action as when any advancedinterposer 54, except the X interposer, is depressed by hammer 61.

During the punching operation, switch 64 is opened to deenergize thepunch magnet and linkage 66 is restored; consequently, contacts |16open. Opening of contacts |10 breaks circuit D, of space magnet 45; bail12 rises, restoring lever |13, raising dog 65, and lowering pawl 16 intoengagement with rack 36. The card carriage thereupon feeds one columnstep, advancing cards P and T and brushes 36, 36', and 36a the distanceof one column width, in the manner previously explained. Thus, the Xhole has been punched, and the cards have been fed one column sttep toplace their next columns at operating posi ions.

Automatic spacing without x-puncnmg It may be desired to space the cardsalong, column-by-column, without causing an X duplication. Further, itmay be desired to space the cards along, step-by-step, independently ofany punching operation.

As explained previously, to suppress X-punching,'key |05 (Fig. 9) isdepressed to move bail 51 to the left, where its notch ||3 is in linewith the X interposer. In addition to placing the bail" .poser isadvanced, but due to its registering with notch ||3 of bail 51, thelatter is not disturbed, and switch 64 of punch circuit B remains open.Consequently, no punching operation occurs.

At the same time as duplicating circuit A is formed, contact 40corresponding to the first skip column is engaged by a brush 36 or 36',as a result of which the following circuit is formed:

Space circuit D.-From the side of the line, through contacts 24. switch26, oating cam contacts 21, switch |66 (now in dotted line position),line |56, space magnet 45, plug wire |66, contact 40, brush 36 or 36',brush 36a, strip 4|, and to the side of the line.

Circuit D energizes magnet 45, which through the previously described,mechanism effects a column advance of' the card carriage, during which,incidentally, escapement pawl 16 rises to open switch 21 of the Xduplicating circuit A.

In the absence of a pattern card P or when the pattern card is renderedineffective, the same circuit D may be formed under control ofcommutator C to cause an automatic column advance of the card carriage.

It may be desired to space the entire skip field and individual fieldsof cards P and T, respectively, past their operating stations, not onlywithout an X duplication, but further, without regard to skippingmechanism or to the skip bar |46. The spacing mechanism is adapted tofeed several columns of the card T or cards T and P past the operatingstations, independently of punching or duplicating operations, andwithout using the skip mechanism. For this purpose, the successivecolumn commutator contacts 40 which correspond to the columns to bespaced past the operating station are each individually plugged to spacemagnet 45.

Since the X hole in the first skip column is not to be duplicated, bail51 is adjusted to its left hand position (Fig. 9) and the circuit of the75 the manner already described, and space magnet is energized to causerocking of bail 12 for effecting a step of advance of the cards and ofbrushes Il, 10', and 36a. Brush 39 or I0' thereupon engages the nextvcontact 40 plugged to magnet 45 and the'latter repeats its operation.Thus. the cards may be fed step by step without accompanying punchingand without regard to the absence or presence of a skip bar |40 and tothe contour ofthe latter.

/lu'nchina with skipping' It may be desired to' punch an X position inthe first of the individual data columns ora card 'T and to skip theremaining individual data columns. It has already been explained thatlthe space magnet 45 may be energized by circuit D under `control ofcommutator C and through punch armature contacts |10 to automaticallyeffect a single column spacing of the card car-y riage as an incident toan X-punching operation.

When it is desired to punch an X hole in a column of card T and thenrapidly skip a succeed ing number of card columns past the operatingstation, the contact 40 corresponding to the column to be X-punched isplugged to space magnet 45. I'he next column contact 40 is plugged toskip magnet 46. In addition, bail 51 is placed with notchl ||3 out ofregister with'the X interposer, and switch |69 is set in full lineposition (Fis. 10).

Now, when the iirst skip column of card P, containing an X hole, reachesthe analyzing station. circuit A forms, advancing the X interposer whichrocks bail 51 to cause contacts 64 to close and form punch circuit B.Linkage 66 thereupon operates to depress hammer 61 for effecting Xpunching in the first individual data column. Linkage 66 also closescontacts |10 of space circuit D and since the contact 40 correspondingto the iirst skip column has been plugged into circuit D, the lattercircuit is completed duringthe X duplicating operation. As a result,space magnet 45 is energized to operate the escapement mechanism forcausing a column advance of the card carriage, incidentally openingswitch 21 to A break the X duplicating circuit, all as previouslydescribed. The second columns of the skip and individual data columnsare now in operating positions and either brush 39 or 39' is nowengaging the corresponding contact 40 which has been plugged to the skipmagnet 46. As soon as brush 39 or 39 engages the latter contact 40, skipcircuit C forms causing energization of magnet 46 to advance skip lifter|42 and under control of skip bar |40 to effect rapid skippingoperation, in the manner previously described.

Thus, the ilrst individual data column may be punched with a'n X holeunder control of pattern card P (or by manual depression Vof a key 50)andby plugging successive contacts 40 to the space and skip magnets 45and 46, in thatorder, a desired number of following card columns may beskipped past the operating station.

Summary Assume a pattern card P to have a skip held containing columns 7to 15, of which column 'I has an X hole and of which columns 8 to 15 areblank. Further, assume column 16 of card P to have a perforation.

aosacvs lh'stsuppose that it is desired to duplicate the X hole incolumn 'I of a work card T and arrest card feed.

Bail 51 is iirst adjusted tothe position shown in F' 9 where notch ||3and X interposer 54:|: are out of line.

When column 'l of card P reaches brushes 22 and contact roller 22, a'circuit A is formed to energize X magnet 26 which causes the Xinterposer to advance. During this advance, the X interposer -rocks bail51 to lift link 60 whichcloses contacts 64. Closure of contacts 64 formspunch circuit B which energizes magnet 65 to operate linkage fordepressing hammer plate 61. Tip 61 of the hammer plate strikes theadvanced X interposer'to effect punching by the X punch l2 of an X holein column 7 of card T.

The X interposer during its depression by ham- -mer 61 moves into recess||4 of escapement operating bail 12. The latter therefore remains atrest and escapement pawl 16 continues to main tain the card carriage incolumn 'l position.

Now the operator may-depress space key 50 v to move columns 8 of cards Pand T to their op-y Here card P contains a perforation and duplicat' ingoperations automatically resume.

The above briefly summarizes X punching without skipping. v

Second-Suppose it is desired to X punch column 'I and skip columns 8 to4l5. Column 7 contact spot 40 of commutator C is plugged to space magnet45 and column 8 contact spot 40 is plugged toskip magnet46. Further,switch |69 (Fig. 10) is placed in full line position to route thecircuit of the space magnet through punch armature contacts |10. Bail 51is left in the position shown invFig. 9.

As before, when column 'l of card P reaches analyzing station, X magnet28 is energized to cause X punching in column '1 of card T. During the Xpunching, linkage 66 closes contacts |10. Since the card carriage is incolumn 'I position, brush I0' is engaging the contact spot 40 plugged tospace magnet 45, and when contacts |10 close, circuit D forms toenergize the space magnet. Energization of the latter operates arm |13a(Fig. 2) to the left to rock bail 12 downwardlyto effect an escapementstep. 'I'he card carriage is then in column 8 position where brush 39engages the contact 40 plugged to skip magnet 46. Thisforms circuit C toenergize magnet 46. Magnet 46 thereupon advances skip lifter |42. Skipbar |40 has a high portion extending from column positions 8 through 15and when skip lifter |42 rides up on this high portion, the cardcarriage is released for rapid, continuous travel to column 16 position.Here, skip bar |40 has a depression. I4 and skip lifter |42 drops toterminate skipping operation.

In above manner, X punching and skipping may be effected.

Third.-If it is desired merely to duplicate the X hole in column 'I 'ofcard T and space to column 8, then as in the second case, column 7contact spot 40 is plugged to space magnet 45 and the latter connectedthrough switch |69 to contacts |16 which are closed by punch operation,Un-

' like the second case, the contact spot 4I corresponding to column 8 isnot plugged to skip magnet 48. Hence, the card feed will be arrestedafter the card carriage is moved to column 8 position under control ofspace magnet 4I. Manually selected punching operations mayv then beeffected in columns 8 to 15 of card T.

Fourth-If it is desired to suppress duplication of the X hole and arrestcard feed, bail 51 is moved to the left to register its notch ill withthe X interposer. When column 7 of card P is analyzed, X magnet 2l is'again energized to advance the X interponer. 'Ihe latter moves throughnotch ill without actuating bail Il so that link Il is not raised toclose contacts 84 of punch circuit B. Then by pressing on button i",contacts 25 in the circuit of X magnet 28 are opened, the magnet isdeenergized and the X interposer retracted. While pressing on buttonIII, the space key 5l' or a value key (other than the X key) will beoperated to advance the cards to column 8 position. Columns 8 through 15may then be punched under manual control.

Fifth- If it is desired to skip columns 7 to 15 by a rapid, continuousfeeding movement, without any punching operations, column 7 contact spot40 is plugged to skip magnet It. When the card carriage reaches column'I position, circuit C of the skip magnet will be completed andskippin'g operation will be eifected under control of a high part ofskip bar Ill extending from column 7 position through column 15position.

Sixth- If it is desired to skip columns "I through 15, without punchingoperations, by a less rapid, step-by-step or tintermittent feedingmovement, and without regard to a skipvbar, the contact spots lllcorresponding to columns 7 through 15 are each plugged to space magnetI5. Further, switch |59 is placed in dotted line position (Fig. 10).Now, when the 'card carriage reaches column 'I position, circuit D' willform to energize magnet 45 which will cause the card carriage to move tocolumn 8 position. There, circuit D will again form, and a second columnadvance will occur. Thus, the card carriage will be stepped along columnby column through column positions 'I to 15.

It is understood that there may be variations and combinations of thesix cases explained above.

Further, it is understood that variations, modiflcations, and changes inthe form of the illustrated embodiment may be made without departingfrom the spirit or scope of the invention. I therefore ,wish to belimited only by the following claims.

What is claimed is as follows:

1. In a machine for punching a card having columns of index pointpositions; the combination of punches for punching one card column at atime, selecting mechanism for causing the punches to perforate selectedindex point positions of the card columns, means for automaticallyfollowing the punching operation by a card feeding operation, and meanseffective upon the punching of a special perforation in a card columnunder control of the selecting mechanism for automatically interruptingcard feeding operation to thereby arrest the latter card column inpunching position for receiving an additional perforation.

2. In a machine for punching a card having columns of index pointpositions; the combination of punches for punching one card column at s,time, automatic selecting mechanism for causing the punches toperforateindex point positions of thecard columns, means for automaticailyfollowing the punching operation of a' card column by a-column stepfeeding operation, and means effective upon thed in a card column of aspecial perforation selected by the automatic selecting mechanism forautomatically interrupting card feeding operation to thereby arrest thelatter column in punching position to receive an additional perforation.

3. In a machine for punching columns of a work card: the combination ofpunches for perforating the card columns one at a time, automaticselecting mechanism for selecting the punches vfor operation, means forautomatically following selection and operation of a punch by a cardfeeding operation, and means controlled by the automatic selectingmechanism when it selects a predetermined punch for a certain cardcolumn for automatically interrupting card feeding operation to arrestthe latter card column in punching position.

4. In a machine for punching columns of a work card under control ofperforations in a pattern card; the combination of punches forperforating the work card-column by column, mechanism controlled by thepattern card for selecting the punches for operation, means forautomatically following selection and operation of a punch by a cardfeeding operation. and means controlled by a speciall perforation of thepattern card for automatically interrupting the card feeding operation.

5. In a machine for punching columns of a work card under control ofperforations in a pattern card; the combination of punches for punchingthe work card column by column, mechanism controlled by the pattern cardfor selecting the punches for operation, means for automatically feedingthe work card one column step following selection and operation of apunch, and means eil'ective upon the operation of a punch under controlof a special pattern card perforation for interrupting card feedingoperation.

6. In a machine for punching work card columns under control ofperforations in a pattern card; the combination of punches forperforating the work card one column at a time, mechanism controlled bythe pattern card for selecting the punches for operation, means forautomatically feeding the `worlr card one column step after eachpunching operation, means effective upon the selection of a specialpunch by the pattern card for interrupting card feeding operation, andmeans thereupon operable to cancel the selection of the special punch.

7. In a machine for punching work card columns under control ofperforations in a pattern card; the combination of punches forperforating the work card one column at a time, mechanism controlled bythe pattern card for selecting the punches for operation, means forautomatically following a punching operation by a work card feedingoperation, means effective upon the selection of a special punch by theselecting mechanism for interrupting card feeding operation, and meansalso capable, upon the selection of the special punch, of suppressingoperation of the latter punch.

8. In a machine for punching columns of a record card ;y the combinationof punches for perforating the card columns, mechanism for selecting thepunches for operation, means following a punch selection for effectingpunching operation by a selected punch, and a device having alternativepositions, in one of which it suppresses the operation of a selectedpunch by aforesaid means and in the other of which it renders theaforesaid means effective to operate the selected punch.

9. In a machine for punching columns of a record card; the combinationof punches for perforating the card columns, mechanism for selecting thepunches for operation, means operation of which is initiated by thepunch selecting operation for causing the selected punch to perforatethe card, and a device adjustable to a position for suppressinginitiation of operation of aforesaid means by the punch selectingoperation.

10. In a machine for punching columns of a record card; the combinationof punches for perforating the card columns, mechanism for selecting thepunches for operation, means for operating the selected punches toperforate the card, a device operated by the punch selecting mechanismfor initiating operation of aforesaid means, and means for renderingsaid device ineffective for operation by the punch selecting mechanismwhereby operation of the punch operating means is suppressed.

11. In a, machine for punching columns of a record card; the combinationof punches for perforating the card columns, punch selecting mechanismincluding an element actuated to effect punch selection, a device movedby the element upon actuation of the latter, means rendered ef fectiveby the device upon movement of the latter by said element for operatingthe selected punch to perforate the card, and means for disabling thedevice from movement by said element to thereby prevent the device fromcausing the punch operating means to operate the punch selected by saidelement.

12. In a machine for punching columns of a record card; the combinationof punches for perforating the card columns, punch selecting mechanismincluding an interposer advanced to effect selection of a punch, adevice in the path of advance of the interposer to be moved by thelatter, means rendered effective by movement of the device by saidinterposer to operate thev selected punch for perforating the card, andmeans for displacing the device from the path oi' advance of saidinterposer to prevent the latter from moving the device whereby thepunch operating means fails to operate the punch selected by saidinterposer.

13. In a machine for punching a card; the combination of punches, punchoperating means to cause the punches to perforate the card, punchselecting means including an interposer advanced to effect a punchselecting operation, a pivoted bail actuated by the advance of theinterposer for initiating operation of the punchoperating means, andmeans for shifting the bail in the direction of its pivotal axis, thebail having a notch brought into register with the interposer upon theaforesaid shifting of ithe bail and through which the interposer freelyadvances without actuating the bail whereby the bail may be renderedineffective to initiate operation of the punch operating means tooperate the punch selected by said interposer.

14. The machine as defined in claim 13, said bail shifting meansincluding a pair of finger keys, one of which is operable to positionthe bail with its notch in register with the advancing interposer andthe vother of which is operable to set the' bail with its notchdisplaced from the path of advance of the interposer to cause advance ofthe latter to actuate the bail.

15. In a machine for punching columns of a record sheet; the combinationof punches for perforating the sheet one column at a time, means forselecting the punches for operation, punch operating means for causingoperation of the selected punches. means for feeding the sheet past thepunches, a magnet, a circuit controlled by the punch operating means forenergizing the magnet as an incident to a punching operation, and meansoperated by energization of the magnet for causing the feeding means tofeed the sheet a single column step.

16. In a machine for punching columns of a record sheet; the combinationof punches for perforating the sheet column after column, means forselecting the punches for operation, punch operating means for causingthe selected punches to perforate the sheet, mechanism for feeding thesheet past the punches, and means apart from and independent of thepunch selecting means for causing the feeding mechanism to continuouslyfeed a plurality of selected columns of the sheet past the punchesWithout accompanying punching operation.

17. In a machine for punching columns of a record sheet; the combinationof punches for perforating the sheet column after column, means forselecting the punches for operation, punch operating means for causingthe selected punches to perforate the sheet, mechanism for feeding thesheet past the punches, skipping mechanism for causing the feedingmechanism to continuously feed a plurality of columns of the sheet pastthe punches, and a device apart from and independent of the punchselecting or operating means for initiating operation of the skippingmechanism when a selected column of the sheet reaches the punches.

18. In a machine for punching columns of a record sheet; the combinationof punches for perforating the sheet column by column, means forselecting the punches for operation, punch operating means for causingthe selected punches to perforate the sheet, mechanism for feeding thesheet past the punches, skipping mechanism including a skip bar, a skiplifter coacting with sald skip bar to release the feeding mechanism forcontinuous operation, and a device apart from and independent of thepunch selecting means for causing the skip lifter to coact with the barfor effecting release of the feeding mechanism when a predeterminedcolumn of the sheet reaches the punches.

19. In a machine for punching columns of index point positions of acard; the combination, of punches including a special punch forperforating a special index point of the card, means for selecting thepunches for operation, mechanism for feeding the card, punch operatingmeans for causing the selected punches to perforate the card, a deviceactuated under control of the selecting means for causing the feedingmechanism to feed the card one column step after operation of any ofsaid punches except the special punch, and means apart from the punchselecting means capable of automatically operating said device to caus'ethe feeding mechanism to automatically feed the card one column stepfollowing opertion of the special punch.

CHARLES O. WEILMAN.

